Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1 … · 2020. 11. 18. · 1070005...

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1070005 11-2020 Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1-800-766-5337 www.leerinc.com ICE MERCHANDISER INSTALLATION, OPERATION, AND SERVICE MANUAL WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer (For more information go to www.p65warnings.ca.gov)

Transcript of Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1 … · 2020. 11. 18. · 1070005...

Page 1: Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1 … · 2020. 11. 18. · 1070005 11-2020 Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1-800-766-5337

1070005 11-2020

Leer, Inc. 206 Leer Street, P.O. Box 206

New Lisbon, WI 53950 1-800-766-5337

www.leerinc.com

ICE MERCHANDISER INSTALLATION, OPERATION, AND SERVICE

MANUAL

WARNING: This product can expose you to chemicals including nickel, which is known to the State of California to cause cancer (For more information go to www.p65warnings.ca.gov)

Page 2: Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1 … · 2020. 11. 18. · 1070005 11-2020 Leer, Inc. 206 Leer Street, P.O. Box 206 New Lisbon, WI 53950 1-800-766-5337

Table of Contents

Start-UP .............................................................................................................................................................................................. 3

Storage and Transportation: ........................................................................................................................................................... 3

Packaging: ..................................................................................................................................................................................... 3

Installation .......................................................................................................................................................................................... 3

Placing Merchandiser: ................................................................................................................................................................... 3

NSF Installation: ............................................................................................................................................................................ 3

Merchandiser Leveling: ................................................................................................................................................................. 3

Electrical: ....................................................................................................................................................................................... 4

Condensate Evaporator: ................................................................................................................................................................. 4

Operation ............................................................................................................................................................................................ 5

Temperature Controls: ................................................................................................................................................................... 5

Mechanical Controls Thermostat: .................................................................................................................................................. 5

Mechanical Controls: Defrost Timer: ............................................................................................................................................ 5

Electronic Controls: Digital Display: ............................................................................................................................................ 5

Operating Mode Display: .............................................................................................................................................................. 6

Electronic Control Operation:........................................................................................................................................................ 6

Cold Wall Control: ........................................................................................................................................................................ 6

Auto-Defrost Control:.................................................................................................................................................................... 6

Electronic Control Startup: ............................................................................................................................................................ 6

Possible Displayed Alarm Codes: ................................................................................................................................................. 7

Loading Ice: ................................................................................................................................................................................... 7

Maintenance ....................................................................................................................................................................................... 7

Cleaning the Merchandiser: ........................................................................................................................................................... 7

Cleaning Door Gaskets: ................................................................................................................................................................. 8

Cleaning Condenser Coils: ............................................................................................................................................................ 8

Defrosting the Merchandiser: ........................................................................................................................................................ 8

Cold Wall Defrost Methods: .......................................................................................................................................................... 8

Auto-Defrost Methods: .................................................................................................................................................................. 9

Auto-Defrost Mechanical Timer: .................................................................................................................................................. 9

Auto-Defrost Electronic Control: .................................................................................................................................................. 9

Glass Door Models and Maintenance: ......................................................................................................................................... 10

Solid Door Models and Maintenance .......................................................................................................................................... 10

Decaling Recommendations Solid Door: .................................................................................................................................... 10

Door Gaskets and Hardware: ....................................................................................................................................................... 10

Electronic Control- CW and AD Wiring Diagram ........................................................................................................................... 13

Mechanical Control- CW and AD Wiring Diagram ......................................................................................................................... 13

Replacement Parts List ..................................................................................................................................................................... 14

Warranty ........................................................................................................................................................................................... 16

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Start-UP

Storage and Transportation: The merchandiser should be stored and

transported in an upright position. It is not

recommended to tilt the merchandiser. If the

merchandiser is tilted beyond 45° of vertical, oil

may drain from the compressor causing premature

failure.

Do Not stack merchandisers on top of one another

due to risk of falling. Falling merchandisers could

result in damaged units or serious injuries. It is

recommended to use warehouse racking design to

accommodate the weight of the merchandisers

and prevent falling.

Packaging: Prior to installation, the outer packaging on the

merchandiser will need to be removed. The

majority of the packaging materials can be

recycled and disposed of in an environmentally

friendly manner. The wooden skid is secured to

the underside of merchandiser with hex-headed

screws and will require the use of a 3/8" hex-

socket for screw removal. Glass door models are

shipped with door support brackets installed

between the merchandiser's door opening(s) and

the bottom rail of the door. These support brackets

need to be removed prior to operation of the

merchandiser. Failure to remove the brackets will

affect the seal of the door gasket to the cabinet

face.

Installation

Note: Leer Merchandisers are commercial in

design and not intended for residential use.

Placing Merchandiser: When placing the

merchandiser, allow a minimum of 3 inches of air

space from all surfaces of the cabinet and any

surrounding structures. This air space allows for

air flow over the surface of the cabinet, thus

reducing condensation and aid in the drying of

these surfaces. On outdoor auto-defrost models,

the 3-inch space behind the merchandiser will also

help ensure that the evaporator drain tube, which

exits the back wall, is not being restricted during

the defrost cycle.

NSF Installation: Most merchandisers can be special ordered with

NSF certification. NSF merchandisers are

supplied with leveling kits packaged inside. These

kits are required by NSF to maintain a 6-inch

clearance from bottom of unit to the ground. This

kit must be installed on location. To install, use a

proper lifting device to raise the merchandiser

from the ground. Allow enough room to get the

full kit under the skid plate. DO NOT TIP THE

MERCHANDISER beyond 45° of vertical as

mentioned in the Storage and Transportation

section of this manual. Insert the stem of the

leveling kit into the bottom of the skid plate.

Lower the merchandiser into position while

maintaining the 6-inch required NSF clearance.

Merchandiser Leveling: The merchandiser installation location should

have a solid, level base. If the merchandiser is

exhibiting a slight forward lean, the front of the

cabinet should be blocked to bring the cabinet to a

level position. On auto-defrost models, a forward

lean may negatively affect proper draining of the

unit cooler assembly during the defrost cycle.

Leveling kits are available for use on most cabinet

models. Contact the Merchandiser Sales

Department for more information.

Full leveling kit

shown, inserted into

the skid plate of the

merchandiser.

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Electrical: Warning! Component parts shall only be

replaced with like components. Electrical and

servicing should be done by licensed

professionals. Disconnect power before

performing service. Certain models contain

multiple voltages. Leer does not assume

responsibility for any damage to people or

things deriving from violation, improper use or

in any case not in compliance with Leer’s

instructions.

Figure 1: Grounding

The Merchandiser must be plugged into a

dedicated and properly grounded 115V/60hz/1Ph

circuit with a circuit fuse or breaker rated at a 15

or 20 Amps depending on model. The electrical

service connections to the merchandiser must be

compliant with national electric code and local

codes that may apply. DO NOT use extension

cords. The 20 Amp plug configuration, that some

models come with, should NOT be removed.

Some models are equipped with a main power

switch. If so equipped, make sure the switch is in

the OFF position before plugging the

merchandiser into the lower receptacle of the

electrical outlet.

WARNING: Operating more than one appliance

on the same circuit may result in voltage

fluctuations when both appliances are operating

simultaneously. This voltage fluctuation may

cause the circuit breaker to trip and/or may cause

voltage drops. As a result, the power to the

merchandiser may be interrupted and freezing

performance can be adversely affected which may

cause equipment damage and /or product loss.

Voltage supply to the merchandiser must not vary

more than ±10 percent of the normal 115V.

Information regarding the electrical voltage and

frequency being supplied to the merchandiser can

be found on the merchandiser’s serial data plate

typically located at the upper left corner of the

merchandiser’s interior. Information regarding the

maximum fuse/circuit breaker size required for

the specific model is available from the

condensing unit data plate.

Condensate Evaporator: Indoor auto-defrost

models are supplied with a condensate evaporator

heater assembly which is packaged with

instructions and shipped inside the merchandiser.

It will require simple installation by the consumer

(see Figure 2). A separate copy of this instruction

sheet is supplied with the condensate evaporator

assembly. The condensate evaporator assembly

contains a drip pan to collect water generated by

the merchandiser’s defrost cycle and a heat

element to evaporate the water. Once energized,

the heat element in the condensate evaporator

assembly is continuously generating heat. The

merchandiser is to be placed so that there is at

least 1 inch of air space between the back surface

of the condensate evaporator housing and any

wall surface behind the cabinet which allows for

heat dissipation away from the surface of the wall.

The main power cord should also be routed to

avoid pinching.

Note: Do not operate an indoor auto-defrost

merchandiser without having a condensate

evaporator assembly installed under the

evaporator drain tube exiting the back wall of the

cabinet. Failure to install this assembly will result

in water draining directly onto the floor during the

defrost cycle. This may result in water damage to

the floor and create a hazardous slip condition in

the area surrounding the merchandiser.

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Figure 2: Condensate Evaporator Installation

Operation

Temperature Controls: Merchandisers are

currently available with either mechanical

controls (optional) or an electronic control

(standard).

Mechanical Controls Thermostat: The compressor is controlled by the classic

thermostat where the engagement and

disengagement of the thermostat is controlled by

the expansion and contraction of gas within a

sensing tube. Merchandisers with mechanical

thermostats are factory set to operate at a cut-out

temperature of 18° F +/-2°. The thermostat has an

adjustment knob that allows a limited adjustment

range. Rotating the adjustment knob clockwise

will lower the cabinet temperature while a

counterclockwise rotation will raise the cabinet

temperature. Rotating the adjustment knob fully

counter-clockwise will shut off power completely

to the merchandiser’s condensing unit. The

thermostat has a pre-set differential of 7° F, which

is not adjustable.

On cold wall (CW) cabinet models, the thermostat

is located on top of the cabinet under the

condensing unit cover housing. The sensor tube

inserts through the ceiling of the cabinet and exits

near the interior back wall.

On automatic defrost (AD) cabinet models, the

thermostat is housed inside the unit cooler

assembly that is mounted to the interior ceiling of

the cabinet.

Mechanical Controls: Defrost Timer: The defrost timer is located under the condensing

unit housing. The timer will engage the

merchandisers defrost cycle once every 4 hours

for a duration of 16 minutes. The standard timer,

supplied with most merchandisers, is pre-set and

non-adjustable. The timer may be manually

advanced into defrost by rotating the advancement

knob in a clockwise direction. The knob is located

on the rear of the timer casing. Manual

advancement into the defrost mode will re-set the

next controlled defrost cycle to take place in 4

hours.

The automatic defrost function is available on

cabinet models designated as “auto-defrost” (AD).

The cold wall (CW) cabinet models do not have

an electronically controlled defrost and require

manual de-icing of the cabinet’s interior walls.

Electronic Controls: Digital Display:

Manual

Defrost Key

Defrost Enabled Icon –

Melting

Snowflake

Compressor

Enabled Icon

Set

K

ey

Temperature & Settings

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Operating Mode Display: • Snowflake “ON” – compressor enabled in

run cycle; control displays current cabinet

temperature.

• Snowflake “Flashing” – anti short cycle

delay enabled to protect the compressor

from trying to start too frequently.

• Melting Snowflake “ON” – defrost in

progress, control displays the letters “DE”

• To view the control’s programmed “Set

Point” (cut-out temperature): press and

release the “Set Key.”

• To initiate a manual defrost cycle: press

and hold the “Manual Defrost Key” for

more than 2 seconds.

Note: Manual Defrost will not initiate unless the

unit is at standard operating temperatures.

Electronic Control Operation: The electronic control combines the functions of

both the mechanical thermostat and defrost timer

into a single control. The control also offers the

consumer the capability of monitoring the

operational status of the merchandiser via the icon

and digital temperature display (located on the

face of the control). The controller has been

programmed by Leer to operate the merchandiser

within the design parameters of the refrigeration

system. The set-point (cut-out) for these controls

has programmed parameters for 16°F, with a

differential of 8°F. Should the user desire to alter

the Set-Point, the new set-points should not

exceed +/- 4° of the original factory setting. Do

not alter any of the programming parameters in

the controls without first consulting with Leer.

There are two separate electronic controls

available based upon the cabinet type; Cold Wall

or Auto-Defrost.

Cold Wall Control: The CW control is located

under the condensing unit housing. The control

has a single thermal-couple probe wire used to

monitor the air temperature inside the cabinet.

The probe enters through the top of the cabinet

and is secured at a specific location where the

back wall and ceiling of the interior meet. The

control will display the air temperature in the

cabinet at the probe’s location. Although the

control has a Manual Defrost Key, this action is

non-functional on the CW cabinet models (see the

defrost instructions for CW cabinet models in the

“MAINTENANCE” section of this manual).

Auto-Defrost Control: The AD control is also

located under the condensing unit cover and

contains two thermal-couple probe wires. Both

probe wires are routed through the cabinet’s

suction line hole and into the unit cooler

assembly, which is mounted to the interior ceiling

of the cabinet. The Red Air Sensing Probe (“P1”)

routes through the unit cooler and has its’ sensing

bulb secured to the outer, left-hand wall of the

unit cooler. Probe “P1” monitors the air

temperature in the merchandiser at that location.

During the normal operation of the control, the

digital display will show the cabinet temperature

at the probe “P1” location. The Black Probe “P2”

is inserted into the finned section of the

evaporator coil, near the top of the unit cooler

assembly. This probe monitors the temperature of

the evaporator coil during the defrost cycle.

Electronic Control Startup: Turn the switch

if equipped into the ON position. After a 2-

minute delay, the compressor and the

condenser fan should start. The evaporator fan

motors and the light fixture will operate

immediately when power is applied. The

condensing unit will continue to run until the air

temperature in the cabinet reaches +16°F.

Note: If a defrost is required upon startup the

controller will enter defrost mode after the 2-

minute delay. Normal operation will resume upon

defrost termination and a short drip time.

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Possible Displayed Alarm Codes:

“P1” – Air Probe failure: The control will

override the “P1” functions and cycle the

compressor at 5-minute intervals, until the probe

fault can be corrected.

“P2” – Evaporator Probe failure: The control will

override the “P2” function and operate with a

timed defrost cycle, until the probe fault can be

corrected.

“HA” – Maximum Temperature Alarm: The

cabinet air temperature has exceeded programmed

temperature for a period exceeding 15 minutes.

The alarm will continue to display until the

cabinet temperature drops below maximum levels.

“LA” – Minimum Temperature Alarm: The

cabinet air temperature has dropped below the

programmed minimum. This alarm will continue

to display until the cabinet temperature rises

above the minimum level.

Note: Should a “P1” or “P2” alarm occur, check

the probe wire connections to the control prior to

replacing the probe wire.

For more information regarding the electronic

control program and instructions, please contact:

Leer, Inc. Merchandiser Division Customer

Service. Phone: 800-766-5337 or our web-site at

https://www.leerinc.com

Loading Ice: The merchandiser should be pre-

chilled prior to loading with ice. Pre-chilling will

aid the merchandiser in reaching storage

temperature at a faster rate once loaded and

reduce the risk of melting product. Do not over

fill the merchandiser with ice!

Cold Wall Models: If the bagged ice blocks off air

flow from the front of the cabinet to the control’s

air probe, the control may not respond quickly

enough to maintain proper cabinet temperature.

Allow a minimum of 6 inches clearance between

the top of the ice stack and the ceiling of the

cabinet interior. This distance will allow a

pathway for warmer air entering the cabinet

during door openings to migrate to the sensing

bulb on the probe.

Auto-Defrost Models: Avoid stacking ice above

the top edge of the air ducts that are installed on

the walls of the cabinet interior. Blocking off

these air ducts may restrict the even distribution

of cold air throughout the cabinet, this may result

in warm spots developing within the cabinet.

Also, do not stack ice high enough to block off the

evaporator fans in the unit cooler assembly. The

evaporator fans are intended to pull warm air

entering the cabinet into the unit cooler and then

push that warm air across the surface of the

evaporator coil. This process removes the heat

prior to distributing the air into the cabinet.

Maintenance Note: Component parts shall only be replaced

with like components. Maintenance and repair of

the electrical and refrigeration systems should

only be done by trained and qualified personnel.

Disconnect power before performing service.

Certain models may contain multiple voltages.

Leer does not assume responsibility for any

damage to people or things deriving from

violation, improper use, or in any case not in

compliance with Leer’s instructions.

Cleaning the Merchandiser: The

merchandiser should be cleaned annually. In

corrosive environments such as coastal regions

and areas where deicing chemicals and road salts

are used, more frequent cleaning is recommended.

The exterior of the merchandiser can typically be

cleaned with the use of detergents dilluted in

warm water followed with a tap water rinse. The

exterior paint is capable of withstanding the use of

polishing compounds and most solvents. If using

stronger cleaning agents, they should be tested on

a small, inconspicuous areas prior to application

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onto visible surfaces of the merchandiser. If

cleaning the interior of the merchandiser, the use

of detergents with strong odors (i.e. citrus based

cleaners, abrasive cleaners containing chlorine

bleach, and any form of solvent based cleaners)

are not reccommended. They may leave

objectionable odors inside the cabinet which may

be absorbed by the ice being stored in the

merchandiser.

Cleaning Door Gaskets: Door gaskets may

mildew and stiffen over time. The gasket is made

of a soft, flexible rubber-like material that can be

cleaned using most kitchen and bath cleaners

designed for mildew removal. Review

manufacturer information and instructions on any

cleaning agent prior to use to determine the

cleaner’s compatability with the surface being

cleaned.

Cleaning Condenser Coils: It is recommended to inspect and clean the

condenser coil and fan blades every 3 months.

There are a variety of methods available for

cleaning the condenser coils. Keep in mind that

the debris is being drawn into the coil by the

condenser fan and the debris should be removed

in the opposite direction.

• The simplest and preferred method would

involve the use of a vacuum cleaner to suck

the debris out of the coil from the outside

surface.

• Another method is using compressed air to

blow dust from the coil. The debris should be

blown out from the inside surface of the coil.

WARNING: When using compressed air, there

may be a cloud of dust released into the air

surrounding the machine.

It is recommended that the service person wear

proper protective equipment (i.e. safety glasses

and a dust mask) when performing coil cleanings.

Note: DO NOT use any type of filter media in

front of the condenser coil to trap dust. Filter

testing has proven to create enough restriction of

air flow to reduce the efficiency of the coil’s heat

exchange.

Defrosting the Merchandiser: The Auto Defrost merchandiser is designed to be self-

defrosting. The heat generated by the defrost heater

element will melt the ice build-up on the evaporator

coil and the resulting water will drain through a tube

out of the back wall of the machine.

It is recommended to check the operation and

condition of the evaporator coil and for signs of

excessive ice buildup every 3 months

The means and methods of the ice removal are

dependent upon whether the merchandiser is a Cold

Wall model or an Auto-Defrost model.

Cold Wall Defrost Methods: The evaporator

tubing for the cold wall cabinet models are located

within the walls of the cabinet. After the cold wall

merchandiser is energized, a visual inspection of the

cabinet’s interior will reveal a serpentine frost pattern

developing on the ceiling and walls. This frost pattern

represents the configuration of the evaporator tubing

as it’s attached to the inside surface of the cabinet. As

humidity enters the cabinet, it will collect and

accumulate along this frost-line pattern. As the frost-

line expands and builds in thickness, it will slow the

heat transfer between the cabinet walls and the

evaporator tubing. The cold wall cabinet models do

not have the design capability to self-defrost. In order

to defrost the cold wall models, product will need to be

emptied from the cabinet and the power to the cabinet

disconnected. Defrosting requires the entire interior

surface of the cabinet to be warmed above freezing in

order to melt and remove the build-up of ice from the

interior surfaces.

Power to the merchandiser can be turned off by merely

unplugging the cabinet from its power source. If the

merchandiser is equipped with a mechanical

thermostat, power can also be turned off by rotating

the temperature adjustment knob to its full

counterclockwise position. After the defrost operation

is complete, return the knob to its normal position to

re-energize the condensing unit. If the cold wall

cabinet has an electronic control, power can also be

turned off by use of the ON/OFF toggle switch located

on the control box of certain cabinet models. If the

toggle switch is not present on the control box, the

only means of disconnecting power is to unplug the

main power cord at the power source. Although the

electronic control on the CW merchandiser has a

defrost key on its display face, this feature does not

function with the CW cabinet design and will not

switch off power if pressed.

With the merchandiser de-energized, the defrost

process can be expedited with the addition of hot air

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being forced through the cabinet’s door opening(s). As

the ice build-up softens, a plastic ice scraper may be

utilized to aid in the removal of ice from interior of the

cabinet. If possible, avoid the use of metal ice

scrapers, ice picks, or hammers as these tools may

inadvertently penetrate through the wall of the cabinet,

puncture the evaporator tube, and cause irreparable

damage.

A floor drain is present in most merchandiser models.

For outdoor models, the floor drain plug can be

removed to allow water drainage. If draining to the

ground is not desirable or if the merchandiser is

located indoors, the water may be removed with the

use of a wet-vac and disposed of. It is suggested that

some of the time allocated to defrost the cold wall

cabinet may be utilized for the cleaning of the

condenser coil as well as inspecting the condition of

wiring insulation, door gaskets, and spring-loaded

hinges.

Auto-Defrost Methods: Auto-Defrost models

are equipped to be self-defrosting and enter defrost

mode once every four hours automatically. During the

defrost cycle, the power to the refrigeration system

will be automatically re-directed to the defrost circuit.

This will shut down power to the condensing unit,

evaporator fan motors and also send power to a heat

element that is attached to the surface of the

evaporator coil. The heat generated by the element will

melt the ice build-up on the evaporator coil and the

resulting melt water will drain through a tube out of

the back wall of the merchandiser.

On outdoor cabinet models, the melt water will exit

the drain tube directly to the ground.

On indoor cabinet models, the consumer needs to

install the condensate evaporator heater assembly

(described in the Installation section of this manual)

onto the exterior back wall of the cabinet. The melt

water from the defrost cycle will drain into a catch pan

where it will then be heated to the point of

evaporation. The function of the condensate

evaporator’s heat element should be checked routinely.

Failure of the element could result in an over-flow

condition for the assembly’s drain pan. A simple

check of the heater would be a touch test of the surface

temperature of the assembly’s housing. The

condensate evaporator’s heat element is energized

continuously so the surface of the housing should

always be hot to the touch. If testing the heat element

with a meter, the element can be unplugged from its’

power source and a resistance reading can be taken

through the plug’s bladed terminals. The condensate

heater is rated to generate 125 watts of power, which

translates to approximately 106 ohms of resistance.

Auto-Defrost Mechanical Timer: The AD

merchandiser may come equipped with a mechanical

timer (as described in the Operation section of this

manual). The timer is factory set for a 16 minute

defrost cycle to occur at 4-hour intervals. During its’

run-cycle, the timer supplies power to the thermostat,

condensing unit, and evaporator fan motors. During

the defrost cycle, the timer switches power from the

run-circuit to the defrost-circuit and energizes the

defrost heater. The AD mechanical timer may be

manually advanced to a defrost mode by rotating the

advancement knob (located on the back of the timer)

in a clockwise direction until the defrost switch

engages. The advancement knob rotates in a clockwise

direction only.

The mechanical defrost circuit is equipped with a

defrost termination switch and is attached to one of the

evaporator coil tubes (located inside the Unit Cooler

Assembly). This switch senses temperature and will

cut power to the defrost heat element should the

temperature at the surface of the switch reach 70° F.

This switch terminates power to the heat element and

will not end the timed defrost cycle. Once the unit has

returned to run mode, the termination switch will re-

set when the temperature at its’ surface reaches 30° F.

Auto-Defrost Electronic Control: For

Merchandisers with an electronic control (as described

in the OPERATION section of this manual). The timer

is factory set for a 24 minute defrost cycle to occur at

4-hour intervals. Like the mechanical timer, the

electronic control will switch power from run mode

(condensing unit and evaporator fans) to defrost mode

(defrost heat element). Whereas the mechanical timer

operates strictly on a timed cycle, the duration of the

electronic control’s defrost cycle is controlled by the

temperature at the sensor probe “P2.” If the

temperature at this probe reaches 60°F prior to the 24-

minute timed cycle ending, the control will override

the timed cycle and immediately switch power from

the defrost mode to a drip time then standard run

mode. If temperature is not reached at probe “P2,” the

defrost cycle will continue for the entire 24- minute

programmed cycle prior to returning to run mode.

Energizing the defrost circuit in the electronic control

can be verified with the illumination of the “melting

snowflake” and the letters “DE” appearing on the

control’s display.

The electronic defrost circuit is equipped with a

defrost termination safety switch and is attached to one

of the evaporator coil tubes (located inside the Unit

Cooler Assembly). This switch senses temperature and

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10

will cut power to the defrost heat element should the

temperature at the surface of the switch reach 100° F.

This switch only terminates power to the heat element

and will not end the timed / temperature defrost cycle.

Once the merchandiser has returned to run mode, the

termination safety switch will re-set when the

temperature at its’ surface reaches 70° F.

Warning! The defrost termination / safety switch

functions as a possible fire protection device. Do not

remove or by-pass the switch from the defrost circuit.

Note: If an electronic control AD unit loses power and

the temperature at “P2” is less than 60°F, it will

automatically enter a defrost cycle after a two-minute

delay.

Glass Door Models and Maintenance: The glass door is designed for use on indoor units or in

a controlled environment. It is constructed with a non-

heated, triple-pane glass-pack, with both inner and

outer panes being tempered. To avoid possible

condensation on the outer surface of the door, case

temperature in the merchandiser should be maintained

near its’ designed set-point of 16°F +/- 4° and ambient

dew-points around the cabinet location should be kept

below 60°F. Any household glass cleaner can be used

to clean the surface of the door. The glass door’s

gasket is a rubber bellows-style magnetic gasket. The

replacement gasket has an insert dart that installs into a

retaining slot in the door frame. The gasket can be

started in-place with light hand pressure, followed

with mild impact pressure applied with a dead-blow

hammer to ensure that the legs of the dart penetrate

fully into the slot. During replacement, always set the

gasket at the 4-corners of the door first to reduce

stretching the gasket. If the door gasket appears to be

in good condition but is failing to seal to the surface of

the cabinet, both the spring-load tension and

adjustment of the hinges should be checked.

A simple test of the spring-load tension is to open the

door just enough to insert two fingers between the

surface of the cabinet and the handle side of the door.

When the fingers are withdrawn, there should be

enough tension set on the hinge spring-loads to slowly

move the door to a closed position. If the door does

not move from this two-finger location, it’s likely that

either the spring-load requires re-tensioning or

lubrication. If the door moves part way from the two-

finger location but stops short of the cabinet, the

compression of the gasket along the hinge side of the

door should be checked. If there is too much

compression, the door will bind when closed and

should have its hinge-mount location checked and

possibly adjusted. Removing the hinge covers will

expose the spring-loads for tension adjustment or

removal. Removal of the spring-load will expose the

hinge-adjustment plate and mounting screws should

hinge adjustment be required. See Figure 3 for

instruction regarding spring-load installation and

adjustment.

Solid Door Models and Maintenance: Cabinets designed for outdoor use will have a metal

clad door that has been insulated with the same

urethane foam insulation as the cabinet. The exterior

metal is stucco embossed to hide minor impacts and is

coated with a fluorocarbon paint system. This paint

system was designed to withstand years of outdoor

exposure. For routine cleaning of the door’s exterior

surface, a mild detergent diluted in warm water should

be adequate.

Decaling Recommendations Solid Door: a) Use a decal with a 2-mil cast vinyl substrate.

Cast vinyl contains less memory than a

calendared vinyl or a polyester substrate and

will conform to the embossed surface with the

least amount of stress on the decal’s adhesive.

b) The decal’s adhesive should have a minimum

peel-strength rating of 80 oz. /inch.

c) Clean the surface of the door with isopropyl

alcohol and either air dry or dry with a clean

cloth.

d) Heating the surface of the door immediately

before applying the decal will aid the adhesive

bond of the decal. Never apply a decal to a

surface that is colder than 50° F.

e) Use a soft roller or plastic squeegee to apply

the decal and press it into the embossed

surface of the metal. Applying a small amount

of heat to the surface of the decal will aid in

this process.

Door Gaskets and Hardware: Routine inspection of the door gasket seal and the

action of the door’s hinges are recommended. If

damage has occurred to the gasket, it may allow

outside air to penetrate the cabinet and the gasket

should be replaced. The upright solid door (measuring

27” x 46”) utilizes the same hinge as the glass door.

The slant door (measuring 27” x 27”) utilizes a hinge

which is not spring-loaded. Both doors have the same

gasket profile, which has a barbed dart that inserts into

a slot opening in the surface of the door frame. See

Figure 4 for instructions on solid door gasket

replacement.

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SPRING CARTRIDGE INSTALLATION INSTRUCTIONS

Figure 1 Figure 2 Figure 3

1) Install No. 220 Hinge with Adjustment Plate.

2) Assemble Spring Cartridge. Grease bushing end of pin prior to insertion into Stationary Bushing. Apply

a small amount of grease to the hinge-pin hole on the end of the Adjustment Collar Assembly. (Fig. 1).

3) Place Thrust Washer and Stationary Bushing over square pin in the Hinge and insert the Adjustment Pin

into the Adjustment Collar. Using the Adjustment Pin, compress the Spring and place the Adjustment Collar

over the round pin (Fig. 2).

4) Using the Adjustment Pin, turn the Adjustment Collar until the Pin contacts the Hinge. Then insert the

Stop Pin in hole of Adjustment Collar (Fig. 3). CAUTION: The Stop Pin must fully seat on Adjustment

Collar. Failure to do so may cause the Stop Pin to become dislodged. Inserting the Adjustment Pin more

than halfway thru the Adjustment Collar can cause partial push out of the Stop Pin. Repeat adjustment until

desired tension is reached. The maximum tension is 6 holes or approximately 1-1/4 turns.

5) Install Cover on Hinge.

WARNING: Use safety glasses when installing and adjusting spring tension.

Figure 3: Spring Install Instructions

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Solid Door Magnetic Gasket Replacement Instructions:

1. Position solid door on a flat non-abrasive surface, exterior side down.

2. Remove old gasket by grasping firmly at the corner and pulling away from the door frame extrusion.

3. Inspect the extruded slot to insure there are no particles to interfere with the new gasket installation.

4. Align new gasket with door corners and use thumb to press into frame.

5. Start at one corner of the frame and begin pressing the new gasket into the slot. Using a non abrasive

tool such as a hammer head works well for this application. Apply downward pressure while moving

along the permeter of the frame. Excessive pressure may strech the gasket and cause bulging at the

corners.

Gasket Detail View Step 4

Step 5

Figure 4: Door Gasket Install

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Electronic Control- CW and AD Wiring Diagram

Mechanical Control- CW and AD Wiring Diagram

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Replacement Parts List ITEM DESCRIPTION PART # ITEM DESCRIPTION PART #

1. Condensing Unit: Provide

condensing unit model number

2. Thermostat - Mechanical 1328046

Timer - Mechanical 1328023

Electronic Control – CW XRO2 1328034

Electronic Control – AD XRO4 1328035

Sensor Probe Evap (Black) 1328055

Sensor Probe Room (Red) 1328056

Power Harness w/o Switch Terminal 1270062

Power Harness with Switch Terminal 1270070

Toggle Switch (for PN 1270070) 1213042

3. Unit Cooler Evaporator Parts:

Fan Guard 1396023

Fan Blade 1392008

Fan Mounting Bracket 5120140

Fan Motor 1393029

Mechanical Defrost Termination

Switch 30/70F 1328003

Electronic Defrost Safety

Switch 70/100F 1328004

LCL 120 Defrost Heater – 400W 1261007

LCL 170 Defrost Heater – 600W 1261008

LCL 190/280 Defrost Heater – 800W 1261009

4. Full Top Enclosure: Provide the

merchandiser model number.

5. "ICE" Decal for full top (Red) 1070076

“ICE” Decal for full top (Blue) 1070069

6. Cover w/o decal 5848004-5

Cover w/ decal 5848000-5

7. "Packaged Ice" Decal. 1070068

8. J-Bolt for all solid doors 1160008

9. Door Hasp for all solid doors 5120001

10. Door Handle for all solid doors 1914001

11. Check Chain 1915001

12. Door, Stucco Charcoal Gray 5591027

27" x 27"with gasket

13. Door Gasket for 1030016

27" x 27" solid door

14. Hinge with cover for 27" x 27" solid

door

1911019

15. Door, Stucco Charcoal Gray 5591035

27" x 46" with gasket

16. Door Gasket for 1030014

27" x 46" solid door

17. Glass Door, 28" x 47" Silver Frame

1412012

18. Door Gasket for 28" x 47" glass door

1490007

19. Door Hinge for 28" x 47" door:

Silver w/spring & cover

1911002

Silver Hinge Cover 1990008

Spring-Load Kit (Kason 220 hinge) 1990002

20. "ICE" Decals (Red) One Set

"ICE" Decals (Blue) One Set

1070074

1070070

21. Rain Shield for 27" x 46" solid door 5120098-5

22. Ice Pallet 22" x 28" Black 1050079

23. LED lamp (2’ T8 cool white clear) 1216009

24. Condensate evaporator assy. for

automatic defrost models (White)

5349040

25. Cond. evaporator heat element 125W 1261004

26. Merchandiser leveling kit 4 pc

5350029

Note: Providing the cabinet model and serial number will aid in identifying parts for a specific merchandiser.

Return authorized parts to this address: Leer, Inc.

206 Leer St.

New Lisbon, WI 53950

- Contact Leer Merchandiser Customer Service Dept. to obtain a Return Material Authorization (RMA) Number.

NOTE: Leer electrical and refrigeration parts are installed in compliance to UL Standard 471. Replacement parts that are not UL Certified or are

not identical to the OEM installed part, will void the merchandiser’s UL Listing and/or the Factory warranty per "General Provisions” of the

accompanying warranty statement.

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Upright Models

Slant Models

Note: LP models are similar in design to slant models except for refrigeration location.

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Warranty

ICE MERCHANDISERS: Seller warrants the merchandiser under normal use and service, for one (1) year for

the component parts (to be shipped by seller), and ninety (90) days for repair labor from the date of original

shipment. The merchandiser compressor motor is warranted for five (5) years from the date of original

shipment. SELLER MUST BE CONTACTED AND PROVIDED A MERCHANDISER SERIAL NUMBER

FOR WARRANTY CLAIM. This applies only to goods installed in the United States, Canada or Mexico.

Seller’s obligation under this warranty shall be limited to repair (subject to the limitations below) or

replacement of any part(s), F.O.B. Seller’s factory, which prove(s) defective within the applicable warranty

period. Seller reserves the right to inspect defective part(s) and may at Seller’s discretion require return of

part(s) to Seller’s factory for inspection. The determination as to whether any defect exists shall be made in

Seller’s sole judgement.

GENERAL PROVISIONS APPLICABLE TO ALL WARRANTIES AND PRODUCTS: Seller shall not

be liable for any breach of any express warranty set forth above unless Seller is informed immediately upon the

discovery of defective part(s). The warranties described above are not assignable and shall operate only in favor

of the original buyer/user. In event of any claim for breach of express warranty, Seller shall be responsible for

labor charges for repair or replacement of any defective part(s) or assembly only for defects reported to Seller

within ninety (90) days after the date of installation. ALL LABOR CHARGES SHALL BE AUTHORIZED OR

APPROVED BY SELLER PRIOR TO THE REPAIR OR REPLACEMENT OF PART(S). In all other events,

Seller shall not be responsible for any labor charges. Labor charges shall only include standard straight time

labor hours at the site of product installation, and shall exclude charges for travel time, mileage, or other

premium charges. These warranties shall not apply to any goods, or any part thereof, which may have been

subject to any damage in transit, accident, negligence, abuse or misuse, unauthorized alteration or repair, acts of

nature or failure to follow any of the Seller’s manuals or instructions, if in Seller’s sole judgement, such act,

omission or event has detrimentally affected the physical condition, use or operating qualities of the product.

SELLER MAKES NO WARRANTY, EXPRESS OR IMPLIED, BY REASON OF LAW, STATUE OR

OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A

PARTICULAR USE OR PURPOSE, AND ALL IMPLIED WARRANTIES ARE HEREBY DISCLAIMED.

SELLER SHALL NOT BE LIABLE FOR LOSS OF GOODS, MERCHANDISE OR OTHER PROPERTY,

OR LOSS OF PROFITS, RESULTING FROM PRODUCT DEFECTS. IN NO EVENT SHALL SELLER’S

LIABILITY UNDER ANY CIRCUMSTANCES FOR ANY BREACH OF CONTRACT OR FOR ANY

OTHER CLAIM BY BUYER AGAINST SELLER EXCEED THE CONTRACT PRICE OF THE GOODS

SOLD HEREUNDER WITH RESPECT TO WHICH SUCH CLAIM ARISES.

MODEL NO. ______________________

SERIAL NO. ______________________